Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5259800 | Microprocessor controlled system for testing and selectively reconditioning a CRT | Gary C. Fields, Lawrence T. Pena | 1993-11-09 |
| 5007077 | Coin telephone message and management system | Gary C. Fields, Lawrence T. Pena | 1991-04-09 |
| 4839916 | Telephone toll integrity checking system | Gary C. Fields | 1989-06-13 |
| 4633042 | Electronic micro-controller conversion module for step by step switching apparatus | Gary C. Fields | 1986-12-30 |